Anchor attachment for spudding shoes



July 21, 1925. 1,546,649

P. J. GLYNN ANCHOR ATTACHMENT FdR SPUDDING SHOES Filed Aug. 30, 1925Patented July 21, 192 351 entree rates orrics.

PATRICK J'. GLYNN, 0F TULSA, OKLAHOMA.

ANCHOR ATTACEMENT FOR 'SPUDDING SHOES.

Apphcation filed. August 30, 1923. Serial No. 660,082.

dent of the city of Tulsa, in the county of Tulsa and State of Oklahoma,have invented certain new and useful Improvements in an AnchorAttachment for Spudding Shoes; and I do hereby declare that thefollowing is a full, clear, and exact description of the samereferencebeing had to the accompanying drawings and to the numerals of referencemarked, which form a part of this specification.

This invention relates to an anchor attachment for spudding shoes.

In drilling oil wells, it is common practice to dispense with the use ofthe walking beam on the derrick when it is desired to carry on theoperation known as spudding, and position a sp-udding. shoe against thedrilling cable and connect the spudding shoe with an operating crank sothat the drilling tool is quickly raised and lowered by the actuation ofthe spudding shoe against the cable.

Inorder to prevent excessive wear upon the cable and to avoid lostmotion and expedite the operation of spudding, it is de sirable that thesp-udding shoe be anchored against improper vertical movements. To thisend, I have invented an anchor attachment in connection with a spuddingshoe that may be quickly applied and secured to parts of the derrick formaintaining the spudding shoe in the proper plane of reciprocation.

The invention comprises the novel structure and combinations hereinafterdescribed and more particualrly pointed out and defined in the appendedclaim.

In the accompanying drawings which illustrate a preferred embodiment ofthis invention and in which similar reference numerals refer to similarfeatures in the different views.

On the drawings:

Figure 1 is an elevational view of the anchor attachment involving thisinvention.

Figure 2 is a top plan view of the attachment.

Figure 3 is an end elevation of the attachment.

Figure 4: is a sectional view upon the line l4i of Figure 1.

Figure i fragmenta y eva eae view of a derrick showing the applicationof my invention. 7

As shown on the drawings:

In. referring to the drawings which illustrate one embodiment of thisinvention there 'is shown an arcuate spudding shoe 1 having an arcuategroove in its upper surface and a .pair of laterally extending trunnions2. A, V-shaped member or clevis .3 having its arms terminate in hooks 4:and so spaced apart as to straddle the spudding shoe, is pivotallyconnected to the said shoe bv means of said hooks engaging the trurinions 2.

A collar or ring 5 surrounds the V-shaped member 3 just above thespudding shoe, and is secured thereto by bolts or rivets or in anysuitable way. Opposite sides of said ring are bulged outwardly toprovide recesses 6 for receiving cables or tie ropes.

lVhen it is desired to use the spudding shoe in connection with thespudding operation, it is applied to the drilling cable and anchored tothe derrick as shown in Figure 5. A simple way of applying the spuddingshoe consists in removing the clevis 3 and positioning the spudding shoeupon the upwardly extending part 7 of the drilling cable adjacent thedrum. Then applying the clevis and connecting it by a cable 8 with thecrank arm 9 of a motor. A pair of anchor lines 10 and 11 attached toopposite sides of the ring 5 may then be fastened to appropriate partsof the derrick for anchoring the spudding shoe against undue verticalmovement. In the drawings, I have illustrated one method of securing theanchor lines 10 and 11; the anchor line 10 being secured to the floor ofthe derrick while the anchor line 11 is trained over a pulley 12 mountedupon one of the vertical standards of the derrick at any suitable heightand then brought down and attached to the head arch post 13.

The spudding tool is supported upon the lower end of the drilling cable14 which passes through the floor of the derrick. The other end of thedrilling cable is attached to asuitable drum 15; the intermediateportion of the cable being trained over a pulley mounted upon the top ofthe derrick (not shown). During the spudding operation the drum 15 maybe controlled in any well known way as the same involves no part of thisinventiop During the spudding operation, the motor Will reciprocate thecable 8 and thereby raise and lower the sp-udding tool for drilling theWell as is Well known. The anchor attachment involving this inventionWill maintain the spudding shoe in operative relation with the drillingcable and prevent all looseness in operation with the consequent Wearupon the drilling; cable. Further, the sp-uddin-g shoe Will besubstantially maintained in a. rectilinear line of reciprocationthuswise insuring a complete stroke of the spudding shoe.

In View of the foregoing, the spudding operation is speeded up and theWear and tear on the cable and spudding' shoe. is greatly reduced.

I am aware that numerous details of construction may be varied through aWide P. J. GLYNN.

Witnesses J. M. HENoH, CLYDE W. HAMMON.

